Digital oscilloscope



FIG. 1 is a front and top-left perspective view of a digital oscilloscope showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view of the left side thereof;

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a digital oscilloscope, substantially as shown and described. 